Add sign in flow using magic links

test/models/magic_link/code_test.rb

@@ -0,0 +1,17 @@
+require "test_helper"
+
+class MagicLink::CodeTest < ActiveSupport::TestCase
+  test "generate" do
+    code = MagicLink::Code.generate(6)
+
+    assert_equal 6, code.length
+    assert_match(/\A[#{MagicLink::Code::CODE_ALPHABET.join}]+\z/, code)
+  end
+
+  test "sanitize" do
+    assert_equal "011123", MagicLink::Code.sanitize("OIL123")
+    assert_equal "ABC123", MagicLink::Code.sanitize("ABC-123 !@#")
+    assert_nil MagicLink::Code.sanitize(nil)
+    assert_nil MagicLink::Code.sanitize("")
+  end
+end